Use system's Speech recognition for assistant

**Is your feature request related to a problem? Please describe.**

I always have to open assistant, click into the text field and start the speech recognition using the button on the keyboard.

**Describe the solution you'd like**

Start the system's speech recognition on opening assistant.

**Describe alternatives you've considered, if any**

None

**Additional context**

Use selected Futo as my system's speech recognition.